If you had put them there already then those are correct
Answer:
b. them
Explanation:
their is used to show ownership
Ex: those are THEIR glasses
They is used to refer to a group of people or someones unknown gender
Ex: There THEY are
It is used to refer to objects
Ex: IT is a ball
there is more to it but this is a simple explanation
Authorization, defines what a person accessing the data can do with that data.